Add last_change_time to the list of fields stored in Attachment object
Add last_change_time to the list of fields stored in Attachment object

vu2srk/Mozilla-First-Task,LegNeato/bztools,mozilla/relman-auto-nag,mozilla/bztools,anoopvalluthadam/bztools,mozilla/relman-auto-nag,mozilla/relman-auto-nag